Tri-slot back



FIG. 1 is a perspective view of the tri-slot back;

FIG. 2 is a front view of the tri-slot back of FIG. 1;

FIG. 3 is a back view of the tri-slot back of FIG. 1;

FIG. 4 is a side view of the tri-slot back of FIG. 1;

FIG. 5 is a side view of the tri-slot back of FIG. 1 showing the sideopposite that shown in FIG. 4;

FIG. 6 is a top view of the tri-slot back of FIG. 1; and,

FIG. 7 is a bottom view of the tri-slot back of FIG. 1.

I claim the ornamental design for the tri-slot back, as shown anddescribed.